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Description
The idea is to split the app-schema module in two:
- The first part would contain everything that helps with complex features in general: building them, evaluating filters against them (property accessor, x-path evaluation), building complex feature types from XSD. These classes do not rely on specific schemes like GML, etc... apart form XS.
- The second part will contain anything that is app-schema specific: creating complex feature datastores with mapping files.
The second part would continue as the gt-app-schema module. The first part would split off and become a new module 'gt-complex'. More specifically, this 'gt-complex' module will consist of the following classes that are now in the gt-app-schema module.
- org.geotools.util.ComplexAttributeConverterFactory
- org.geotools.filter.expression.FeatureProperty + complete org.geotools.feature.xpath package
- complete org.geotools.feature.type package
- complete org.geotools.feature package
- org.geotools.data.complex.filter.XPath (PARTLY)
- org.geotools.data.complex.FeatureTypeRegistry (PARTLY) + depending classes (for building types from xsd)
Considering the 'partly' ported classes.
- XPath - is just a class of different static methods that need to be split in two
- FeatureTypeRegistry will be made more generic using a helper interface 'FeatureTypeRegistryHelper, app-schema can have its specific implementation
The gt-complex module will have a dependency on the module gt-app-schema-resolver.
Status
This proposal is currently being voted on:
- Andrea Aime
- Ben Caradoc-Davies
- Christian Mueller
- Ian Turton
- Justin Deoliveira
- Jody Garnett
- Simone Giannecchini
Tasks
This section is used to make sure your proposal is complete (did you remember documentation?) and has enough paid or volunteer time lined up to be a success
| no progress |
| done |
| impeded |
| lack mandate/funds/time |
| volunteer needed |
|---|
- NC: move/copy all the classes (specified above) into new module 'gt-complex'
- NC: refactor app-schema to use the gt-complex module and the new featuretyperegistry
- NC: review the geotools documentation and update
API Changes
The API will not change because of this.
Documentation Changes
gt-complex should get its own page in the GeoTools User Documentation. The application-schema documentation page says "Key to the configuration of the app-schema module is the mapping file". The gt-complex module provides support for complex features but has nothing to do with mapping files.
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